Watts IntelliFlow®

Automatic Washing Machine Shutoff Valve

Model A2C-M1, A2C-WB-M1

Important! Read instructions completely before proceeding.

Note: This unit is not compatible with 240VAC powered wash-ing machines or combination washer/dryers that are 240VACpowered. A Watts A2-IntelliTimer (purchased separately) may beused with the IntelliFlow® with washing machines or washer/dry-ers that are 240VAC powered. (See page 5)

A2C-M1 IntelliFlow®

Patent Number 6,003,536

Leak Sensor

IS-A2C-M1/A2C-WB-M1

*This valve requires a 120VAC, 60 Hz, 20 amp ground fault protected circuit.

*Ground Fault Interrupter – A GFI circuit is not required forproper operation of the IntelliFlow®, but is strongly recom-mended as a safety device.

Surge Protection – Although a surge protector is not

required for proper operation of the IntelliFlow®, it is strongly

recommended, especially in areas where power surges or

lightning strikes frequently occur.

Operating InstructionsThe Watts IntelliFlow® Automatic Washing Machine Shutoff Valve is equipped with astate-of-the-art electric current sensing device. When the washing machine is turnedon, the device senses current flow to the washing machine. This causes it to actuateits solenoid water valves, allowing water to flow to the washing machine. When thewashing machine shuts off upon completion of the full wash cycle, the device sensesthe lack of current and closes the water valves. The IntelliFlow® remains closed untilthe next time you turn the washer on.

The leak sensor provides additional protection from water damage while the washingmachine is in operation. Water detected at the sensor results in immediate shut off ofwater flow to the washing machine hose.

By installing an IntelliFlow®, you are protecting your home from potential major water dam-age from a burst or leaking washing machine inlet hose.

Operating Specifications

Electrical Rating: 120VAC, 60 Hz

Circuit Breaker Requirements: 20A GFI*

Max. Appliance Current Rating: 15A

Current Draw: 20mA (with appliance off)

Electrical Cord: 6 ft. type SJT 14 AWG

Max. Temperature: 180°F (82°C)

Max. Pressure: 150psi (10.3 bar)

Valve Body: Reinforced Polysulfone

Rubber Goods: Buna-N, EPDM

*Ground Fault Interrupter – A GFI circuit is not required for proper operation of theIntelliFlow®, but is strongly recommended as a safety device. In accordance with NationalElectric Code, NFPA 70, Section 210.11 Branch Circuits Required, at least one 20-amperebranch circuit shall be provided to supply the laundry receptacle outlets(s) required bySection 210.52(F). This circuit shall have no other outlets.

*Surge Protection – Although a surge protector is not required for proper operation of theIntelliFlow®, it is strongly recommended, especially in areas where power surges or lightningstrikes frequently occur.

ModelA2C-M1

from washingmachine

Electrical power source

ground fault protected

Water supplyOne for coldOne for hot

ModelA2C-WB

from washingmachine

Electrical power source

ground fault protected

Water supplyOne for coldOne for hot

Model A2C-M11⁄2" solder connectors for exposed pipingStandardly furnished with 1⁄2" solder copperadapters. Either connection may be used for thehot or cold water supply.

Model A2C-WB-M1Includes wall mount box. Wall mount box has waterinlet connection holes spaced 23⁄8" center to center.Furnished with 1⁄2" solder connectors. Either connec-tion may be used for the hot or cold water supply.

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2

Installing the A2C-M1 IntelliFlow®

1. Shut off electrical power supply.

2. Shut off both hot and cold water supply lines.

3. If retrofitting to an existing installation, disconnect the wash-ing machine hoses from the existing shutoff valve(s).

4. Loosen the two (2) adapter nuts and remove both adaptersfrom IntelliFlow® valve body.

5. Place adapter nuts over piping prior to soldering adapters.

6. Solder adapters onto piping.Note: Piping must be 23⁄8" on center (Figure 3).

7. Place O-rings on adapter grooves (Figure 3A).

8. Align and slip the valve body over adapters. Tighten adapter nuts.Caution: Do not over-tighten nuts.Caution: To avoid cross threading, check thread alignment.

9. Connect the washing machine hoses to the IntelliFlow®’s hotand cold water outlets.

10. Plug the washing machine into the IntelliFlow®’s electrical outlet.Note: Appliance current rating must not exceed 15 amps.

11. Plug the IntelliFlow®’s power cord into a house electricalreceptacle (Figure 4).Note: The IntelliFlow® requires a 120VAC, 60Hz, 15 ampground-fault protected receptacle.*

IMPORTANT: The IntelliFlow® will detect any current flow tothe washing machine when the washing machine is off. TheIntelliFlow® must be calibrated to adjust the current flowthreshold required to activate the shutoff valves. To calibratethe IntelliFlow® see Calibration: (Startup) on page 4.

12. Turn on both hot and cold water supply lines, and check for leaks.

13. If there are no leaks, turn on the electrical power. Installationof the A2C-M1 IntelliFlow® is now complete.

*Ground Fault Interrupter – A GFI circuit is not requiredfor proper operation of the IntelliFlow®, but is stronglyrecommended as a safety device.

WARNING:

Power MUST be off during installation or servicing of the valve!

IMPORTANT: Do not plug valve into supply circuit

until completion of assembly.

For Vertical Installation Only!

Figure 3

Figure 3A

Figure 4

21⁄2"

Inst

all U

pri

ght

O-RingAdapter Nut

Adapter

Water Supply Piping

Power supplyground fault

protected

Water supply

Washer

WattsA2C-M1

IMPORTANT:Do not plug valve into electrical supply circuit until

you have completed installing the unit and reconnecting the water supply lines.

CAUTION:Use of the Watts Automatic Washing Machine Valveoutlet for appliances other than a washing machine

is not recommended and voids the warranty.

IS-A2C-M1-A2C-WB-M1.qxd 6/22/09 2:30 PM Page 2

ULR

LISTED3P47

3

WARNING:

Power MUST be off during installation or servicing of the valve!

IMPORTANT: Do not plug valve into supply circuit

until completion of assembly.

For Vertical Installation Only!

Figure 5(side view)

Figure 6(front view)

Figure 7(top view)

Trim Plate

Trim Plate

Water supply connections

FinishedWall

WallStudding

Drain Knockout

Drain

Trim Plate

MountingSlots (4)

MountingTabs (4)

Drain connection

Wall Box

Installing the IntelliFlow® Wall Box Unit (A2C-WB-M1)

1. Shut off electrical power supply.

2. Shut off both hot and cold water supply lines.

3. Remove trim plate (Figs. No.5 & 6) and set aside until

you’ve completed wall finishing (painting, wall papering,

paneling, etc.).

4. Install the four mounting tabs provided in slots on the sides

of the wall box enclosure (Fig. No. 7).

5. Position the A2C-WB-M1 between the wall studs as shown

in Fig. No. 7. Check that it is level and fasten the mounting

tabs to the studs.

6. Remove drain plug knock out. Install drain piping and water

supply piping to the appropriate IntelliFlow® connection.

Either IntelliFlow® connection may be used for the hot or

cold water supply.

Caution: Excessive heat from soldering can damage plastic

components. Use a heat sink to prevent damage.

7. Place O-rings on adapter grooves (Figure No. 3A).

8. Align and slip the valve body over adapters. Tighten adapter nuts.

Caution: Do not over tighten nuts.

Caution: To avoid cross threading, check thread alignment.

9. Prior to installing wall materials, turn on water supply (both

hot and cold) and test for leaks. Test drain piping for leaks.

10. Turn off water supply until you’ve completed installing

wall materials.

Note: Installation must comply with local codes and ordi-

nances. Inspection and approval of installation by local

authorities may be required prior to installation of wall mate-

rial. Check with local plumbing authorities for requirements.

11. Once you’ve finished the wall, install trim plate, connect

washing machine water supply hoses to the IntelliFlow®

valve and to the washing machine.

12. Plug washing machine into the IntelliFlow®’s electrical outlet.

Note: Appliance current rating must not exceed 15 amps.

13. Insert the IntelliFlow®’s power cord into a house

electrical outlet.

Note: The IntelliFlow® requires a 120VAC, 60Hz, 15 amp

ground-fault protected receptacle.*

IMPORTANT: The IntelliFlow® will detect any current flow tothe washing machine when the washing machine is off. TheIntelliFlow® must be calibrated to adjust the current flowthreshold required to activate the shutoff valves. To calibratethe IntelliFlow® see Calibration: (Startup) on page 4.

14. Turn on both hot and cold water supply lines, and check forleaks.

15. If there are no leaks, turn on the electrical power. Installation of

the IntelliFlow® A2C-WB-M1 Wall Box Unit is now complete.

16" on center – Typical

*Ground Fault Interrupter – A GFI circuit is not requiredfor proper operation of the IntelliFlow®, but is stronglyrecommended as a safety device.

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4

Installing the Watts Model A2-LS Leak Sensor

Description:The Watts Model A2-LS Leak Sensor plugs into the receptacleon the front panel of the Watts IntelliFlow® Series A2C-M1 or A2-WB-M1. The base of the sensor is placed on the floor close tothe washing machine. Upon detection of water at the sensor theIntelliFlow® immediately shuts off the water supply to the wash-ing machine hoses preventing catastrophic water damage.

Installation:1. Insert the leak sensor contacts into the two holes on the top

of the sensor base until the plug comes to a stop (Figure 2).

2. Place the sensor base on the floor behind the washing machineas close to the fill hoses as possible. Insure that the sensor baseis lying flat with all feet in contact with the floor surface.

3. Insert the leak sensor plug (Figure 1) into the leak sensorreceptical on front panel (Figure 2).

Some washing machine models include circuitry that causes aslight current draw at all times. These models when connectedto the IntelliFlow® can cause the water supply to be energizedcontinuously (Yellow LED: on). Calibration allows the IntelliFlow®

to “learn” the off or standby current draw of the washingmachine to prevent this condition.

Calibration: (Startup)Calibration must be performed with the washing machine in theoff position.

1. Before plugging in the IntelliFlow® power cord into an electri-

cal receptacle, ensure that the leak sensor plug (Figure 1) is

unplugged from the IntelliFlow® unit (Figure 2).

2. Plug the IntelliFlow® power cord into an electrical receptacle.

The green LED lamp should be on and stay on continuously.

The red LED lamp should light for a few seconds then start

to blink on and off, as an indication that the leak sensor is

not plugged in.

3. Be sure that the washing machine is off. Plug the washing

machine into the IntelliFlow®’s electrical outlet.

4. Plug the leak sensor plug into the leak sensor receptacle on

the front panel. This will calibrate the IntelliFlow® to the wash-

ing machine's off or standby position current draw. During the

calibration sequence, the red LED lamp will remain lit for

approximately 3-5 seconds. When calibration is complete the

red LED lamp will blink four (4) times and shut off.

Calibration using IntelliTimer Accessory: Calibration must be performed with the washing machine in theoff position.

To calibrate the IntelliFlow® for use with the IntelliTimer be surethat the washing machine is off and ensure that the power sup-ply to the IntelliTimer is plugged into the IntelliFlow® unit.Remove the leak sensor plug (Figure 1) from the receptacle, wait5 seconds, then reinstall the sensor plug. During the calibrationsequence, the red LED lamp will remain lit for approximately 3-5seconds. When calibration is complete the red LED lamp willblink four (4) times and shut off.

Notes:

The IntelliFlow® is designed to maintain its calibration in theevent of a power failure. Should calibration ever be required, fol-low the procedure below.

Recalibration: Calibration must be performed with the washing machine in theoff position.

To recalibrate the IntelliFlow®, be sure that the washing machineis off. Remove the leak sensor plug (Figure 1) from the recepta-cle, wait 5 seconds, then reinstall the leak sensor plug. Duringthe calibration sequence, the red LED lamp will remain lit forapproximately 3-5 seconds. When calibration is complete thered LED lamp will blink four (4) times and shut off.

Sensor Base

Sensor Contacts

Figure 1Sensor Plug

Figure 2

IntelliFlow® Calibration Procedure

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5

Accessories: Watts A2-IntelliTimer

Push OnPush Off

Power Lamp

Power Jack

Low VoltagePower Supply

IntelliFlow®

Power Outlet

IntelliFlow®

Power Cord

IntelliTimer

The Watts A2-IntelliTimer is an optional accessory used in con-junction with the Watts IntelliFlow® Automatic Washing MachineShutoff Valve. It is a remote timer which allows the IntelliFlow® tobe used in applications where the washing machine or a combi-nation washer/dryer is 240VAC powered. (The IntelliFlow® is notcompatible with 240VAC powered appliances). The timer initi-ates a two-hour cycle when the button is depressed.

The A2-IntelliTimer low voltage power supply is plugged into the IntelliFlow® power outlet. The remote solid-state timer isinstalled in a location that is convenient to the user and connect-ed to the low voltage power supply.

Activation of the push button on the timer causes current flow,which is detected by the IntelliFlow®. The IntelliFlow® then actu-ates the solenoid valves, allowing water to flow to the washingmachine. This also begins a timing sequence of two hours,which, upon its completion de-energizes the IntelliFlow®, shut-ting off the flow of water to the washing machine. The timingsequence can be interrupted by activating the push button asecond time.

A Green LED is illuminated whenever the A2-IntelliTimer is energized.

Note: For calibration procedure see Page 4, “Calibration usingIntelliTimer Accessory”.

Typical InstallationIntelliFlow®

Washer Hoses

WashingMachine

Low Voltage Power Supply

Inte

lliT

imer

Wall Box

Power toIntelliFlow®

Power toWashing Machine

120VAC

240VAC

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6

PROBLEM SOLUTION

1. No water flow from either hot or cold water supply hose: 1. Plug IntelliFlow® into electrical outlet.GREEN LED: OFF 2. Check electrical outlet for power (reset ground fault).

GREEN LED: ON 1. Plug washing machine into IntelliFlow® and turn onYELLOW LED: OFF washing machine.RED LED: OFF / FAINT BLINK 2. Confirm operation of washing machine by plugging it into a

separate electrical outlet.

GREEN LED: ON 1. Leak sensor has detected water.YELLOW LED: OFF 2. Check for broken or leaking hoses.RED LED: ON 3. Unplug IntelliFlow® from electrical outlet, correct problem,

then re-insert plug into outlet to reset valve.4. Turn on washing machine.

GREEN LED: ON 1. IntelliFlow® internal timing circuit has timed out.YELLOW LED: OFF Turn off washing machine to reset timing circuit.RED LED: BLINKING 2. Turn on washing machine.

2. No water flow from one hose - (either Hot or Cold): 1. Service strainers on washing machine hoses.GREEN LED: ON 2. Service strainers on IntelliFlow® (see figure 1).YELLOW LED: ON Caution prior to servicing strainers, first remove power to RED LED: OFF / FAINT BLINK IntelliFlow® by unplugging, then shut off both hot and cold

water supply to IntelliFlow®.

3. Yellow LED Remains On Some washing machine models include circuitry that causes a GREEN LED: ON slight current draw at all times. These models when connected YELLOW LED: ON to the IntelliFlow® can cause the water supply to be energized RED LED: OFF / FAINT BLINK continuously (Yellow LED: ON). The IntelliFlow® requires

calibration, see page 4 for calibration instructions.

4. Unit feels warm: This condition is normal. Internal operating temperatures may cause unit to feel warm to the touch.

5. Unit cycles ON/OFF: Installation in a horizontal position can cause abnormal overheat-ing of the unit which causes this cycling condition. Unit must beinstalled in an upright position as shown on pages 2 and 3.

Troubleshooting Guide

Strainer

O-Ring

Figure 1

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Front Panel Status Indicators

GREEN LED: ON: Unit powered This lamp is illuminated whenever the IntelliFlow® is plugged into a powered wall outlet.

YELLOW LED: ON: Water supply Open. This lamp is illuminated whenever the IntelliFlow® sensesOFF: Water Supply Closed. current flow (the washing machine is turned on).

It is off when the washing machine is turned off.

NOTE: Some washing machine models include circuitry that causes a slight current draw at all times. These models when connected to the IntelliFlow® can cause the water supply to be energized continuously (Yellow LED: ON). The IntelliFlow®

requires calibration, see page 4 for callibration instructions.

RED LED: ON: Leak Sensed. This lamp is illuminated when the leak sensor is installed and water has been detected at the sensor. The water supply to the washing machine hoses are interrupted when a leak is detected.

BLINKING: Unit Timed Out – This lamp blinks whenever the internal timing circuit has timed out and has shut off the water supply to the washing machine hoses. Turning the washing machine Off then On will reset the timing circuit.

FAINT BLINK: (3-5 seconds) – This condition indicates the leak sensor is unplugged. To providethe maximum level of protection, it is recommended that the leaksensor be installed at all times.

7

Sensor Plug

What is Surge Protection?In many locations, changes in the AC voltage supply to the home by the

electrical utility company can occur. Both lower voltage (brownouts) and

high voltage (surges) can occur. Lightning strikes can also cause high

voltage spikes to occur.

All electronic equipment is designed to operate properly within avoltage range. However, high voltage surges or spikes can dam-age sensitive circuitry within electronic equipment.

Surge protectors prevent voltage spikes from reaching electronic equipment.

What is Ground Fault Protection?In many locations, an electrical differential between an electrical ground

and a water pipe ground can exist. A person touching both grounds

could receive a shock that may cause injury or death. A ground fault

interrupter circuit (GFI) detects the differential and removes electrical

power before injury can occur.

The IntelliFlow® does not cause or change the electrical dif-ferential that exists.

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IntelliFlow® Retrofit Kit OptionsIntelliFlow®

Retrofit Installation Kit KA2-BDOrder No. 0004800

These mounting kits are specifically used to install the Watts Model A2C-M1 IntelliFlow® automatic

washing machine shutoff valve to existing drain valves.

This kit is used to replace the following Watts washing machine shutoff valves: the wall mounted

Watts Models #2 Duo-Cloz valve and the wall mounted IntelliFlow® Models: A2, A2C, A2C-M with

the new Watts IntelliFlow® Model A2C-M1.

Final Installation Will Look Like:If Your Current Installation Looks Like:

or KA2-A

This kit is used to replace the following Watts IntelliFlow® Models: A2-WB,

A2C-WB, A2C-WB-M with the new IntelliFlow® Model A2C-M1.

or KA2-R

KA2-BD KA2-BD

left or right drain center drain

IntelliFlow®

Retrofit Kit KA2-ROrder No. 0004805

IntelliFlow®

Retrofit Kit KA2-AOrder No. 0004804

A2C-M1

Final Installation Will

Look Like:

Wall box style with #2 Style, A2, A2C or A2C-M

Wall box style with #2 Style, A2-WB, A2C-WB or A2C-WB-M

If Your Current Installation

Looks Like:Final Installation Will

Look Like:

If Your Current Installation

Looks Like:

Final Installation Will Look Like:If Your Current Installation Looks Like:

A2C-M1

IS-A2C-M1/A2C-WB-M1 0927 EDP# 1911430 © 2009 Watts

USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com

Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca

A Watts Water Technologies Company

Limited Warranty: Watts Regulator Co. (the “Company”) warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date oforiginal shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge.THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES,EXPRESS OR IMPLIED. THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.The remedy described in the first paragraph of this warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, specialor consequential damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting fromlabor charges, delays, vandalism, negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control.This warranty shall be invalidated by any abuse, misuse, misapplication, improper installation or improper maintenance or alteration of the product.Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or limitation of incidental or consequential damages. Therefore the abovelimitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State. You should consult applicable state laws todetermine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED WARRANTIES OFMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

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